iraqandafghanistanthoseviews are shifting. that invisible wounds, mental wounds, psychological wounds, are just as debilitating and in some cases more debilitating than losing a arm or leg. gwen: what is it about these wars that's different from other wars in changing people's opinions about that? >> part of it is the sheer number of tours. you have people going three, four, five, six times to these war zones. and part of the nature of the war itself. in world war ii, you had big battles where the guys to your left and right of you were shooting at enemies. and it was more of a conventional fight. in iraq and afghanistan, you could be walking as has been the case where i've been there, and a person who's a friend of yours suddenly disappears in an i.e.d. you never see the enemy who took his life. a very different kind of challenge. you are constantly afraid of something bad happening. and you never know who the person is who's doing that bad thing to you or the person you care about. >> yochi, does the policy change affect benefits in a way that needed some deep thought and som